My sudden avoidance of the great room as been resolved.
You see it all started innocently enough, Mom headed out on Saturday to return a rejected purse, and while she strolled by the housewares department she spotted the ceramic pot she had been dying to try at 60% off. Her Cheapness was unable to resist such a bargain. She wrestled it off the pot rack like a champion, and fortified her strength with a new pan to match.
The new purchase started a chain of unfortunate events at Casa De Housecat. She put them on the dining table so she and Dad could admire her kill. I gave them a few sniffs and settled in for a nap.
Dad decided to make room for the new pot and pan, starting a clang-fest like nothing I've ever heard before. I HATE it when Dad makes his way into the kitchen by the Evil Cabinet where the pots live. He wrestles those pots to within an inch of their lives. Clang, Bang, Boom. I run for the hills as soon as he gets close to the cabinet, on a good day.
His reorganization of the Evil Cabinet led to other cabinets and it scared me into hiding. Now that things have calmed down I able to warily enter the great room again.
So it wasn't a ghost after all, just some bad pot... and a pan.